| Title |
The Activation Plan of Variable Speed Control of Considering Urban Freeway Continuos Traffic Characteristics (In Busan Metropolitan City) |
| Authors |
정용화(Jeong, Yong-Hwa) ; 최양원(Choi, Yang-Won) ; 임창식(Lim, Chang-Sik) |
| DOI |
https://doi.org/10.12652/Ksce.2014.34.2.0627 |
| Keywords |
가변속도제어;연속류;사고심각도;최고속도제한 Variable speed limit;Continuous traffic flow;Severity of accidents;A speed limit |
| Abstract |
Damage of landslide due to earthquake covers a considerable part of total damage due to earthquake. Landslide due to earthquake affects direct damage of human lives and structures, and social system can be paralyzed by losing functions of roads, basic industries, and so on. Therefore, systematic and specialized research examining the factors affecting the slope stability by earthquakes should be needed. However, method of evaluation of slope stability problems due to earthquake contains somewhat uncertainty since many soil properties are predicted or assumed. In this study, influences of change of soil properties such as degree of saturation and cohesion value are analyzed in factor of safety and displacement using seismic landslide hazard maps based on GIS. As the degree of saturation increases or cohesion decreases, it is found that seismic landslide hazard area marked with factors of safety or displacements tends to increase. Therefore, to draw more exact landslide hazard map during earthquake, it is necessary to obtain accurate soil property information preferentially from site investigation data in the field. |